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Investigation of Quasi-periodic Solar Oscillations in Sunspots Based on SOHO/MDI Magnetograms

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Abstract

In this work we study quasi-periodic solar oscillations in sunspots, based on the variation of the amplitude of the magnetic field strength and the variation of the sunspot area. We investigate long-period oscillations between three minutes and ten hours. The magnetic field synoptic maps were obtained from the SOHO/MDI. Wavelet (Morlet), global wavelet spectrum (GWS) and fast Fourier transform (FFT) methods are used in the periodicity analysis at the 95 % significance level. Additionally, the quiet Sun area (QSA) signal and an instrumental effect are discussed. We find several oscillation periods in the sunspots above the 95 % significance level: 3 – 5, 10 – 23, 220 – 240, 340 and 470 minutes, and we also find common oscillation periods (10 – 23 minutes) between the sunspot area variation and that of the magnetic field strength. We discuss possible mechanisms for the obtained results, based on the existing models for sunspot oscillations.

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References

  1. Abramov-Maximov, V.E., Gelfreikh, G.B., Kobanov, N.I., Shibasaki, K., Chupin, S.A.: 2011, Solar Phys. 270, 175.

  2. Bogdan, T.J., Judge, P.G.: 2006, Phil. Trans. Roy. Soc., Math. Phys. Eng. Sci. 364, 313.

  3. Botha, G.J.J., Arber, T.D., Nakariakov, V.M., Zhugzhda, Y.D.: 2011, Astrophys. J. 728, 84.

  4. Chorley, N., Hnat, B., Nakariakov, V.M., Inglis, A.R., Bakunina, I.A.: 2010, Astron. Astrophys. 513, A27.

  5. Efremov, V.I., Parfinenko, L.D., Soloviev, A.A.: 2010, Solar Phys. 267, 279.

  6. Gopasyuk, O.S., Kosovichev, A.G.: 2011, Astrophys. J. 729, 95.

  7. Hansteen, V.H., Wikstøl, Ø., Brynildsen, N., Maltby, P., Fredvik, T., Kjeldseth-Moe, O.: 2002, In: Sawaya-Lacoste, H. (ed.) SOLMAG 2002. Proc. of the Magnetic Coupling of the Solar Atmosphere Euroconference SP-505, ESA, Noordvijk, 183.

  8. Kitiashvili, I.N., Kosovichev, A.G., Mansour, N.N., Wray, A.A.: 2011, Solar Phys. 268, 283.

  9. Kobanov, N.I., Kolobov, D.Y., Chupin, S.A., Nakariakov, V.M.: 2011, Astron. Astrophys. 525, A41.

  10. Kosovichev, A.G.: 2009, In: Guzik, J.A., Bradley, P.A. (eds.) Stellar Pulsation: Challenges for Theory and Observation, AIP Conf. Proc. 1170, 547 – 559.

  11. Martinez Gonzalez, M.J., Asensio Ramos, A., Manso Sainz, R., Khomenko, E., Martinez Pillet, V., Solanki, S.K., Lopez Ariste, A., Schmidt, W., Barthol, P., Gandorfer, A.: 2011, Astrophys. J. Lett. 730, L37.

  12. Musielak, Z.E., Ulmschneider, P.: 2003, Astron. Astrophys. 406, 725.

  13. Nagovitsyna, E.Y., Nagovitsyn, Y.A.: 2002, Astron. Lett. 28, 121.

  14. Norton, A.A., Ulrich, R.K., Bush, R.I., Tarbell, T.D.: 1999, In: Schmieder, B., Hofmann, A., Staude, J. (eds.) Third Advances in Solar Physics Euroconference: Magnetic Fields and Oscillations CS-184, Astron. Soc. Pac., San Francisco, 136.

  15. Parchevsky, K.V., Kosovichev, A.G.: 2007, Astrophys. J. Lett. 666, L53.

  16. Raju, K.P., Singh, J., Srikanth, R., Chou, D.-Y., TON team: 2001, Solar Phys. 199, 1.

  17. Scherrer, P.H., Bogart, R.S., Bush, R.I., Hoeksema, J.T., Kosovichev, A.G., Schou, J., Rosenberg, W., Springer, L., Tarbell, T.D., Title, A., Wolfson, C.J., Zayer, I., MDI Engineering Team: 1995, Solar Phys. 162, 129.

  18. Smirnova, V., Riehokainen, A., Ryzhov, V., Zhiltsov, A., Kallunki, J.: 2011, Astron. Astrophys. 534, A137.

  19. Soloviev, A.A., Kirichek, E.A.: 2006, In: Bothmer, V., Hady, A.A. (eds.) Solar Activity and its Magnetic Origin, Proc. IAU Symposium 233, Cambridge University Press, Cambridge, 523.

  20. Soloviev, A.A., Kirichek, E.A.: 2008, Astrophys. Bull. 63, 169.

  21. Torrence, C., Compo, G.P.: 1998, Bull. Am. Meteorol. Soc. 79, 61.

  22. Yuan, D., Nakariakov, V.M., Chorley, N., Foullon, C.: 2011, Astron. Astrophys. 533, A116.

  23. Zhao, J., Kosovichev, A.G., Ilonidis, S.: 2011, Solar Phys. 268, 429.

  24. Zhugzhda, Y.D.: 2008, Solar Phys. 251, 501.

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Acknowledgements

SOHO is a project of international cooperation between ESA and NASA. The wavelet software was provided by C. Torrence and G. Compo and is available at http://atoc.colorado.edu/research/wavelets/ .

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Correspondence to J. Kallunki.

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Advances in European Solar Physics

Guest Editors: Valery M. Nakariakov, Manolis K. Georgoulis, and Stefaan Poedts

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Kallunki, J., Riehokainen, A. Investigation of Quasi-periodic Solar Oscillations in Sunspots Based on SOHO/MDI Magnetograms. Sol Phys 280, 347–354 (2012). https://doi.org/10.1007/s11207-012-0021-x

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Keywords

  • Oscillations
  • Sunspots
  • Magnetic fields